Hot property, water views

It’s been a good season for NSW’s floral emblem. The terrible fires of 2019-20 put some species of waratahs under threat.  Others, subject to fires of lesser intensity, have regrown from the massive underground lignotubers, up to half a tonne in weight, that allow them to regenerate after a burn.  2021 was the first year when botanists predicted a big flush of flowers – and it happened between August and October this year.  And people were out in the bush to appreciate them, thanks to the east coast lockdowns which meant that one of the few activities people could legally and safely do was bushwalk.  Appreciate them and sadly, steal them.  The floristry industry grows its own waratahs but last year so many flowers went missing thanks to visitors to national parks close to suburbia that rangers took to daubing the flowers with blue paint.  Around my way there is much proprietorial concern about the local waratahs.  Pictures of flowers and advice on walks to take to see them appeared on the local facebook group and there was much angst about stolen blooms.  If the flowers are picked, waratas don’t produce seedpods.  The high carb content of waratah seeds, making them a tasty snack for critters means its pretty unlikely they’ll find a spot so well hidden that they get a chance to grow anyway, but if the flower is sitting in a vase on someone’s sideboard, that’s certainly not going to happen.

The flowering season is over now, but waratahs are still hot property as far as the local birdlife is concerned.

Over the summer, I’ve been wandering regularly down to a nearby creek (perhaps rivulet is a better word) to spy on LBBs.  Under the twisted  limbs of the angophoras, the little birds frolic through waist-high shrubs, and nest in the stands of saplings along the creek edge.  It’s a little bit magical.  I’ve been lured along that path by a bold grey strike thrush, who hopped along in front of me the whole way; watched the variegated fairywren blokes get hassle from their female companions; been serenaded by golden whistlers and caught one of the ubiquitous new holland honeyeaters sipping nectar from a mountain devil.  Not to mention regular encounters with the local dragons.

Little waterdragon that hangs out on the rocks by the creek

Male variegated fairywren being sat on by females in his group

A particular spot where the path crosses the creek has been my go-to since late last year, when I spent an hour watching a parade of little birds quarrelling over bathing rights in the shallows.  It was so delightful I keep going back hoping for more.

Brown thornbill

So a couple of weeks ago, to stretch my legs after a day staring at screens, I headed down there.  I spotted the construction in the waratah bush right away.  A nest – exciting in itself, but there was movement.  A live one!

New Holland Honeyeater standing on a nest in a shrub and peeping at the photographer

New Holland honeyeater peeping at the photographer

New holland honeyeater sitting in a waratah bush

New holland honeyeater snug in a nest

This new holland honeyeater seemed so at home, rummaging around in the bottom of the nest, and then sitting in the classic “bird in a nest” position, I assumed I’d met the author of this structure.  But, apparently not.

Red browed finch arriving with nest building materials to find it is occupied by a honeyeater

I would love to hear the inner monologue of this red browed finch.

The finch took a pit stop in another branch of the waratah to recover itself.

Red browed finch with nesting material waits to eject the honeyeater in its nest.

Honeyeater in denial.

I was distracted by a passing dollarbird, and by the time I looked back things were looking very different.

Once the nest was reclaimed, the finch and its partner kept on with the nest building.

A few days later, I went back to check out this waterfront property after the builders were done.  No signs of the pair of finches.  Perhaps they were tucked up inside?  I hope they hadn’t miscalculated in picking this nest site, so close to a footpath.

What was this honeyeater interloper was up to?  While brood parasites like koels and channel billed cuckoos (obviously) lay eggs in other birds’ nests, to the best of my knowledge stealing a nest from another bird isn’t a common thing, at least amongst smaller birds – although, dear reader, I’d be happy to be corrected on this.  My favourite example of nest reuse (more accurately “protective nesting) is the story of various little birds – sparrows, swallows and starlings – finding spots to lay their eggs in the 3 metre pile of sticks that ospreys accumulate as they return to the same nest over the years. The raptors and their squatters seemed to breed happily side by side, with the insect eaters snaffling critters attracted to the rotting fish corpses in the osprey nest, using osprey feathers for nest lining and getting some protection from predators by cohabiting with great big raptors.

Nonetheless, even reusing your own nest from a previous season’s nest has some downsides.  They often get a bit nasty, hoaching with fleas and other ectoparasites.  Predators also get to know the location. Things are different when nest sites are hard to come by – hollows are often reused again and again – and there’s evidence of the same cliff side peregrine scrape in Tasmania being used for 13 thousand years.

If he wasn’t trying to steal the nest, perhaps the honeyeater was lost?? The red-browed finches’ nest at the time he popped by was a similar shape to the cupped nests that honeyeaters make.  They’re fidgety birds that look like they have a short attention span but it seems a little bit unlikely.

new holland honeyeater perched on a twig

More likely he dropped in to filch some nest materials, a habit lots of birds have.  Looking back at my pictures, it looks like he started out on the hunt for materials and then just settled in and got comfy.
I’ll be back to the creek to keep tabs on this waterfront hot property – from a respectful distance, of course.  The red splash of a waratah in spring is a rare treat but the red baby redbrowed finch or two would be a wonderful consolation prize.
red browed finch in profile
Birdwatching moments down the road from our Berowra backyard

Wildlife reboot: birds 2.0

Another January, and another trip to Ganguddy, on the western site of Wollemi National Park.  Same marvellous geology, same refreshing dam water, same hot weather.

But some things were different this year.  After the stupendously dry winter, the eucalypt forest was parched, the undergrowth sparse and the leptospermum flowers of last year’s visit few and far between.  We found a patch of sphagnum moss perched in a bowl of sandstone boulders so dry it crunched underfoot.

A “green” satin bowerbird panting in the heat

We spotted plenty of lizards, and the diggers were out in force – lyrebirds wandering through the camp as they tried to scratching their way down to moisture and a wombat turning up to twerk on a picnic bench.  But up in “kingfisher alley”, just before the Cudgegong River disappears into the reed beds, there were fewer blue and green flashes by the water.

Around the camp site, the bowerbirds and treecreepers panted in the heat.  Apart from the ubiquitous reed warblers, there seemed fewer birds altogether.  No sign of the friarbird teenagers of last year, and even the baby swamp hens seemed thin on the ground.

You have to wonder what it takes to change ecosystems irrevocably.  How many dry winters before the old inhabitants decide living and breeding here is just too tricky?  And who would move in to fill their place?

Back at Berowra after the trip, there are changes in the garden too… surprising ones.

We knew we’d be losing the sparrowhawks soon enough, but the family has dispersed in an unexpected order.  The adults disappeared off the scene weeks ago, and by the time we made it home with our ridiculously overloaded vehicle and small and ancient fleet of boats, the siblings had parted too.  There’s just one young’un now.  He seems lonely.

There’s a constant plaintive calling from the trees out back, that seems to intensify when he has prey on hand.  I’m not quite sure if he’s warning his imaginary sibling off or calling him to come and share a meal.

And that’s not the only shift in the soundscape around here.  The sparrowhawks have cut a swathe through the bird population on the premises.  Baby brushturkey numbers have fallen from previous plague proportions, noisy miners are few and far between and the “house” birds of yesteryear – red and little wattlebirds – are now just occasional visitors.

But as the numbers of resident raptors has dropped, a new set of critters have settled in.  Lewin’s honeyeaters which we’ve only seen once or twice in the backyard over the last seven years, have made our backyard their new home.  And we also appear to have acquired some brown thornbills, a raptor snack food if ever there was one.  And the local eastern spinebills, another tasty morsel for a sparrowhawk, are spending more time around here too.

The only explanation I have for the change of personnel is that the hawks have bumped the notoriously territorial wattlebirds, leaving the field open for new arrivals.

I’m pretty happy to have a new set of birds in the garden.  My dream scenario, I have to admit, would be to order up some songbirds that are a bit easier on the eye.  My birdwatching brother puts Lewin’s in a honeyeater “bin taxon” of pretty similar and drab looking birds it’s hardly worth distinguishing between.  Cruel, perhaps, but fairly accurate.

So, why not some new holland honeyeaters, for instance – gorgeous looking locals.  Or (still, my beating heart!) what about some pardelotes?  Just one or two?

On the other hand, it’s possible that all the vibrantly coloured small birds in the neighbourhood have been made into multicoloured meals over the past three months by our family of raptors.  After all, there’s got to be some evolutionary reason for all those SBBs*.

*note: this is a throwaway remark absolutely unsupported by any science.

 

Previous posts about Ganguddy

A bit about Ganguddy’s history and geology – and a little Tim Low on the side

Snakes versus whining teenagers – last year at Ganguddy

 

More on our sparrowhawk summer

Death and sibling rivalry

The new generation of sparrowhawks emerges from the nest…

Baby brush turkeys versus nestling sparrowhawks… the battle of the backyard baby birds

The collared sparrowhawks return to our backyard… or are they brown goshawks?

A first glimpse of the sparrowhawks… and a beautiful white goshawk visits the washing line

 

Further reading

Stephen Garnett, Donald Franklin, Glenn Ehmke, Jeremy VanDerWal, Lauren Hodgson, Chris Pavey, April Reside, Justin Welbergen, Stuart Butchart, Genevieve Perkins and Stephen Williams (2013) Climate change adaptation strategies for Australian birds: Final Report, National Climate Change Adaptation Research Facility

Office of Environment and Heritage, Premier’s Department (2011) New South Wales Climate Impact Profile Technical Report: Potential impacts of climate change on biodiversity